“@cash_warren and I couldn’t be more thrilled to announce… #officiallyoutnumbered #babyboy#cantwaittospoilhim #hugsandkissesforlife#soontobemamaofthree,” the Sin City actress captioned a Boomerang clip of herself and daughters opening a box that contained blue balloons and streamers inside.

Since then, Alba appeared on The Tonight Show and opened up about having a boy.